EP4119563A2 - Makrocyclische verbindung und verwendungen davon - Google Patents

Makrocyclische verbindung und verwendungen davon Download PDF

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Publication number
EP4119563A2
EP4119563A2 EP22187494.4A EP22187494A EP4119563A2 EP 4119563 A2 EP4119563 A2 EP 4119563A2 EP 22187494 A EP22187494 A EP 22187494A EP 4119563 A2 EP4119563 A2 EP 4119563A2
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Prior art keywords
compound
cancer
tumor
day
numbered embodiment
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EP22187494.4A
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English (en)
French (fr)
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EP4119563A3 (de
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Yoshito Kishi
Kazunobu Kira
Ken Ito
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Eisai R&D Management Co Ltd
Harvard College
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Eisai R&D Management Co Ltd
Harvard College
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Priority claimed from US15/814,105 external-priority patent/US9938288B1/en
Application filed by Eisai R&D Management Co Ltd, Harvard College filed Critical Eisai R&D Management Co Ltd
Publication of EP4119563A2 publication Critical patent/EP4119563A2/de
Publication of EP4119563A3 publication Critical patent/EP4119563A3/de
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/22—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains four or more hetero rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/357—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having two or more oxygen atoms in the same ring, e.g. crown ethers, guanadrel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/365—Lactones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
    • A61K39/39533—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum against materials from animals
    • A61K39/3955—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum against materials from animals against proteinaceous materials, e.g. enzymes, hormones, lymphokines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K39/395—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum
    • A61K39/39533—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum against materials from animals
    • A61K39/39558—Antibodies; Immunoglobulins; Immune serum, e.g. antilymphocytic serum against materials from animals against tumor tissues, cells, antigens
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A61P35/04—Antineoplastic agents specific for metastasis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
    • C07D309/04—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/2803—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily
    • C07K16/2818—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against the immunoglobulin superfamily against CD28 or CD152
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/28—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/2863—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants against receptors for growth factors, growth regulators
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/32—Immunoglobulins [IGs], e.g. monoclonal or polyclonal antibodies against material from animals or humans against translation products of oncogenes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00—Medicinal preparations containing antigens or antibodies
    • A61K2039/505—Medicinal preparations containing antigens or antibodies comprising antibodies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2300/00—Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/20—Immunoglobulins specific features characterized by taxonomic origin
    • C07K2317/24—Immunoglobulins specific features characterized by taxonomic origin containing regions, domains or residues from different species, e.g. chimeric, humanized or veneered
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2317/00—Immunoglobulins specific features
    • C07K2317/70—Immunoglobulins specific features characterized by effect upon binding to a cell or to an antigen
    • C07K2317/76—Antagonist effect on antigen, e.g. neutralization or inhibition of binding

Definitions

  • the present invention provides a novel macrocyclic compound having tumor vascular remodeling effects and anti-CAF (Cancer Associated Fibroblast) activity.
  • the compound can be used for treating cancer or inhibiting tumor growth in a subject.
  • Halichondrins such as Halichondrin B
  • Halichondrin B are anticancer agents originally isolated from the marine sponge Halichondria okadai (See, e.g., D. Uemura et al. "Norhalichondrin A: An Antitumor Polyether Macrolide from a Marine Sponge” J. Am. Chem. Soc., 107, 4796 (1985 )), and subsequently found in Axinella sp., Phakellia carteri, and Lissondendryx sp. A total synthesis of Halichondrin B was published in 1992 (See, e.g., Y. Kishi et al. "Total Synthesis of Halichondrin B and Norhalichondrin B" J.
  • Halichondrin B has demonstrated in vitro inhibition of tubulin polymerization, microtubule assembly, beta 5-tubulin crosslinking, GTP and vinblastine binding to tubulin, and tubulin-dependent GTP hydrolysis, and has shown in vitro and in vivo anti-cancer properties (See, e.g., Y. Hirata et al. "Halichondrins-antitumor polyether macrolides from a marine sponge" Pure Appl. Chem., 58, 701 (1986 ); Fodstad et al. "Comparative antitumor activities of halichondrins and vinblastine against human tumor xenografts" J. of Experimental Therapeutics & Oncology 1996; 1: 119, 125 ).
  • Halaven TM Eribulin mesylate
  • Halichondrin B See, e.g., International Publication No. WO 1999/065894, published December 23, 1999 ; International Publication No. WO 2005/118565, published December 15, 2005 ; and W. Zheng et al. "Macrocyclic ketone analogues of halichondrin B" Bioorganic & Medicinal Chemistry Letters 14, 5551-5554 (2004 )
  • Halichondrins include U.S. Patent No. 5,436,238 to Kishi, et al., issued July 25, 1995 ; U.S. Patent No. 5,338,865 to Kishi, et al., issued August 16, 1994 ; and WO 2016/003975 filed by Kishi, et al. , all of which are assigned to the President and Fellows of Harvard College.
  • CAFs Cancer associated fibroblasts
  • stromal cells which are widely found in a variety of solid tumors, are stromal cells. It is well known that CAFs play an important role in angiogenesis, invasion, and metastasis. It is reported that there is a close correlation between the amounts of CAFs and clinical prognosis in, for example, invasive breast cancer (See, e.g., M. Yamashita et al. "Role of stromal myofibroblasts in invasive breast cancer: stromal expression of alpha-smooth muscle actin correlates with worse clinical outcome" Breast Cancer 19, 170, 2012 ) and esophageal adenocarcinoma (See, e.g., T. J. Underwood et al.
  • CAFs correlate to resistance in a variety of tumors such as, for example, breast cancer (See, e.g., P. Farmer et al. "A stroma-related gene signature predicts resistance to neoadjuvant chemotherapy in breast cancer” Nature Medicine., 15(1), 68, 2009 ), and head and neck cancer (See, e.g., S. Schmitz et al.
  • tumor vascular remodeling effects and anti-CAF activity result in the improvement of the cancer microenvironment, which assists tumor treatment.
  • Blood vessels are essential for the growth of tumors. Reconstructed blood vessels in tumors can deliver anti-cancer agents to the tumors, in addition to achieving alleviation of hypoxia.
  • eribulin-induced remodeling of abnormal tumor vasculature leads to a more functional microenvironment that may reduce the aggressiveness of tumors due to elimination of inner tumor hypoxia. Because abnormal tumor microenvironments enhance both drug resistance and metastasis, the apparent ability of eribulin to reverse these aggressive characteristics may contribute to its clinical benefits (See, e.g., Y Funahashi et al.
  • the present invention relates to a macrocyclic compound (e.g ., Compound (1)) having tumor vascular remodeling effects and anti-CAF activity, and pharmaceutically acceptable salts thereof, and isotopically labeled derivatives thereof, and pharmaceutical compositions thereof.
  • a macrocyclic compound e.g ., Compound (1)
  • Compound (1) having tumor vascular remodeling effects and anti-CAF activity, and pharmaceutically acceptable salts thereof, and isotopically labeled derivatives thereof, and pharmaceutical compositions thereof.
  • the invention also includes methods of using Compound (1) for treating cancer, methods for reversibly or irreversibly inhibiting mitosis in a cell, and methods for inhibiting tumor growth in vitro, in vivo, or in a subject.
  • the present invention provides kits comprising Compound (1), or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof.
  • the invention features a compound which is Compound (1): and pharmaceutically acceptable salts thereof; and isotopically labeled derivatives thereof.
  • the invention provides pharmaceutical compositions comprising Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof.
  • the pharmaceutical compositions may comprise one or more pharmaceutically acceptable excipients or carriers.
  • the pharmaceutical compositions may further comprise one or more additional therapeutic agents in combination, alternation, or other kind of synchronized therapy, to achieve the desired goal of treatment.
  • the invention also features methods of making Compound (1) or its intermediates.
  • the synthetic intermediates are also provided herein as part of the invention.
  • Compound (1) has an advantageous effect on tumor vascular remodeling and has anti-CAF activity, as demonstrated in the Figures and Examples. Accordingly, the Compound (1) has potential use in the treatment of cancer (e.g ., squamous cell carcinoma of the head and neck (SCCHN), breast cancer, esophageal cancer, uterine cancer, ovarian cancer, colorectal cancer, endometrial cancer, gastric cancer, small bowel cancer, bladder cancer, sarcomas, rare cancers).
  • cancer e.g squamous cell carcinoma of the head and neck (SCCHN), breast cancer, esophageal cancer, uterine cancer, ovarian cancer, colorectal cancer, endometrial cancer, gastric cancer, small bowel cancer, bladder cancer, sarcomas, rare cancers.
  • cancer e.g squamous cell carcinoma of the head and neck (SCCHN), breast cancer, esophageal cancer, uterine cancer, ovarian cancer, colorectal cancer
  • the present invention provides methods for inhibiting any tumor growth or cancer that will respond to a compound with tumor vascular remodeling effects and/or anti-CAF activity, in a subject, typically a human, with Compound (1), or a pharmaceutically acceptable salt, or isotopically labeled derivative thereof.
  • Compound (1) may be administered in combination with any other active agent that provides beneficial results for the patient.
  • Compound (1) is used in combination with an antibody (e.g ., a monoclonal antibody).
  • Compound (1) is used in combination, alternation, or other synchronized therapy with an immunotherapy, such as an anti-EGFR (epidermal growth factor receptor) antibody, an anti-HER2 (human epidermal growth factor receptor) antibody, an anti-PD-1 antibody, or an anti-PD-Ll antibody, as described in more detail below.
  • an immunotherapy such as an anti-EGFR (epidermal growth factor receptor) antibody, an anti-HER2 (human epidermal growth factor receptor) antibody, an anti-PD-1 antibody, or an anti-PD-Ll antibody, as described in more detail below.
  • a method is provided to treat squamous cell carcinoma of the head and neck (SCCHN) in a subject, typically a human, in need thereof comprising administering to the subject an effective amount of Compound (1), or a pharmaceutically acceptable salt, or isotopically labeled derivative thereof, or a composition thereof, in combination with an anti-EGFR (epidermal growth factor receptor) monoclonal antibody (mAb) therapy.
  • an anti-EGFR (epidermal growth factor receptor) monoclonal antibody (mAb) therapy is cetuximab.
  • a method to treat breast cancer in a subject comprising administering to said subject an effective amount of Compound (1), or a pharmaceutically acceptable salt, or isotopically labeled derivative thereof, or a composition thereof, in combination with an HER2 (human epidermal growth factor receptor) mAb therapy.
  • the HER2 (human epidermal growth factor receptor) mAb is trastuzumab.
  • the Compound (1) may be used to treat breast cancer in combination with traditional chemotherapy such as adriamycin, cyclophosphamide, taxol, etc., or an anti-estrogen such as a selective estrogen modulator (SERM), a selective estrogen degrader (SERD), a partial or total estrogen inhibitor (such as fulvestrant) or a CDK 4/6 inhibitor such as palbociclib (Pfizer).
  • traditional chemotherapy such as adriamycin, cyclophosphamide, taxol, etc.
  • an anti-estrogen such as a selective estrogen modulator (SERM), a selective estrogen degrader (SERD), a partial or total estrogen inhibitor (such as fulvestrant) or a CDK 4/6 inhibitor such as palbociclib (Pfizer).
  • SERM selective estrogen modulator
  • SELD selective estrogen degrader
  • Pfizer a partial or total estrogen inhibitor
  • CDK 4/6 inhibitor such as palbociclib
  • kits described herein may include a single dose or multiple doses of the compound or pharmaceutical composition thereof.
  • a kit of the invention may include instructions for using the provided therapeutic dosage forms (e.g ., instructions for using the compound or pharmaceutical composition included in the kit).
  • the present invention thus includes at least the following features:
  • salt refers to any and all salts, and encompasses pharmaceutically acceptable salts.
  • pharmaceutically acceptable salt refers to those salts which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of humans and lower animals without undue toxicity, irritation, allergic response, and the like, and are commensurate with a reasonable benefit/risk ratio.
  • Pharmaceutically acceptable salts are well known in the art. For example, Berge et al. describe pharmaceutically acceptable salts in detail in J. Pharmaceutical Sciences, 1977, 66, 1-19 , incorporated herein by reference.
  • Pharmaceutically acceptable salts of the compounds of this invention include those derived from suitable inorganic and organic acids and bases.
  • Examples of pharmaceutically acceptable, nontoxic acid addition salts are salts of an amino group formed with inorganic acids, such as hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid, and perchloric acid or with organic acids, such as acetic acid, oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid, or malonic acid or by using other methods known in the art such as ion exchange.
  • inorganic acids such as hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid, and perchloric acid
  • organic acids such as acetic acid, oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid, or malonic acid or by using other methods known in the art such as ion exchange.
  • salts include adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphorsulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, formate, fumarate, glucoheptonate, glycerophosphate, gluconate, hemisulfate, heptanoate, hexanoate, hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate, methanesolfunate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate, pamoate, pectinate, per
  • Salts derived from appropriate bases include alkali metal, alkaline earth metal, ammonium, and N + (C 1-4 alkyl) 4 - salts.
  • Representative alkali or alkaline earth metal salts include sodium, lithium, potassium, calcium, magnesium, and the like.
  • Further pharmaceutically acceptable salts include, when appropriate, nontoxic ammonium, quaternary ammonium, and amine cations formed using counterions such as halide, hydroxide, carboxylate, sulfate, phosphate, nitrate, lower alkyl sulfonate, and aryl sulfonate.
  • Compound (1) is also provided, and can be administered, as a free base.
  • composition and “formulation” are used interchangeably.
  • a "subject" to which administration is contemplated refers to a human (i.e., male or female of any age group, e.g., pediatric subject (e.g., infant, child, or adolescent) or adult subject ( e.g ., young adult, middle-aged adult, or senior adult)) or non-human animal.
  • a human i.e., male or female of any age group, e.g., pediatric subject (e.g., infant, child, or adolescent) or adult subject (e.g ., young adult, middle-aged adult, or senior adult)) or non-human animal.
  • the non-human animal is a mammal (e.g., primate (e.g., cynomolgus monkey or rhesus monkey), commercially relevant mammal (e.g ., cattle, pig, horse, sheep, goat, cat, or dog), or bird ( e.g ., commercially relevant bird, such as chicken, duck, goose, or turkey)).
  • the non-human animal is a fish, reptile, or amphibian.
  • the non-human animal may be a male or female at any stage of development.
  • the non-human animal may be a transgenic animal or genetically engineered animal.
  • patient refers to a human subject in need of treatment of a disease.
  • administer refers to implanting, absorbing, ingesting, injecting, inhaling, or otherwise introducing a compound described herein, or a composition thereof, in or on a subject.
  • treatment refers to reversing, alleviating, delaying the onset of, or inhibiting the progress of a disease described herein.
  • treatment may be administered after one or more signs or symptoms of the disease have developed or have been observed.
  • treatment may be administered in the absence of signs or symptoms of the disease.
  • treatment may be administered to a susceptible subject prior to the onset of symptoms. Treatment may also be continued after symptoms have resolved, for example, to delay or prevent recurrence.
  • an "effective amount" of a compound described herein refers to an amount sufficient to elicit the desired biological response.
  • An effective amount of a compound described herein may vary depending on such factors as the desired biological endpoint, the pharmacokinetics of the compound, the condition being treated, the mode of administration, and the age and health of the subject. In certain embodiments, an effective amount is a therapeutically effective amount. Alternatively, in a separate method or use, the invention may be used, where indicated and effective, as a prophylactic treatment. In certain embodiments, an effective amount is the amount of a compound described herein in a single dose. In certain embodiments, an effective amount is the combined amounts of a compound described herein in multiple doses.
  • a “therapeutically effective amount” of a compound described herein is an amount sufficient to provide a therapeutic benefit in the treatment of a condition or to delay or minimize one or more symptoms associated with the condition.
  • a therapeutically effective amount of a compound means an amount of therapeutic agent, alone or in combination with other therapies, which provides a therapeutic benefit in the treatment of the condition.
  • the term "therapeutically effective amount” can encompass an amount that improves overall therapy, reduces or avoids symptoms, signs, or causes of the condition, and/or enhances the therapeutic efficacy of another therapeutic agent.
  • a therapeutically effective amount is an amount sufficient for treating in any disease or condition described.
  • inhibition refers to the ability of a compound to reduce, slow, halt, or prevent the activity of a biological process (e.g., tumor growth).
  • the inhibition is about 45% to 50%.
  • the inhibition is about 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 99.9%, or 100%.
  • neoplasm and “tumor” are used herein interchangeably and refer to an abnormal mass of tissue wherein the growth of the mass surpasses and is not coordinated with the growth of a normal tissue.
  • a neoplasm or tumor may be “benign” or “malignant,” depending on the following characteristics: degree of cellular differentiation (including morphology and functionality), rate of growth, local invasion, and metastasis.
  • a “benign neoplasm” is generally well differentiated, has characteristically slower growth than a malignant neoplasm, and remains localized to the site of origin.
  • a benign neoplasm does not have the capacity to infiltrate, invade, or metastasize to distant sites.
  • a malignant neoplasm is generally poorly differentiated (anaplasia) and has characteristically rapid growth accompanied by progressive infiltration, invasion, and destruction of the surrounding tissue. Furthermore, a malignant neoplasm generally has the capacity to metastasize to distant sites.
  • the term “metastasis,” “metastatic,” or “metastasize” refers to the spread or migration of cancerous cells from a primary or original tumor to another organ or tissue and is typically identifiable by the presence of a “secondary tumor” or “secondary cell mass” of the tissue type of the primary or original tumor and not of that of the organ or tissue in which the secondary (metastatic) tumor is located.
  • cancer refers to a class of diseases characterized by the development of abnormal cells that proliferate uncontrollably and have the ability to infiltrate and destroy normal body tissues.
  • rare cancer refers to cancers that occur in a relatively small number of patients. Rare cancers include, but are not limited to, sarcomas (e.g ., soft tissue sarcoma, liposarcoma, uterine sarcoma, leiomyosarcoma, myxofibrosarcoma, osteosarcoma, angiosarcoma, Ewing's sarcoma, synovial sarcoma, rhabdomyosarcoma), malignant lymphomas, thymic cancer (e.g ., thymomas), mesothelioma, gastrointestinal stromal tumors (GISTs), neuroendocrine cancer, eye cancer, brain tumors, bone soft tissue tumors, skin cancer, and germ cell tumors.
  • sarcomas e.g ., soft tissue sarcoma, liposarcoma, uterine sarcoma, leiomyosarcoma, myxofibros
  • anti-cancer agent refers to any therapeutic agent that is useful for treating cancer in a subject (e.g ., inhibiting cancer or tumor growth in a subject).
  • Anti-cancer agents encompass biotherapeutic anti-cancer agents as well as chemotherapeutic agents.
  • the present invention is described in detail below with reference to embodiments and the like of the present invention.
  • the invention provides compounds (e.g ., Compound (1)), and pharmaceutically acceptable salts or isotopically labeled derivatives thereof, and pharmaceutical compositions thereof.
  • the invention also provides methods of inhibiting tumor growth and/or treating cancer in a subject comprising administering an effective amount to the subject of a compound or composition provided herein.
  • the compound or composition may be administered as a monotherapy or in combination with another therapy, as described herein.
  • the present invention provides methods of preparing Compound (1), and synthetic intermediates useful to that end.
  • the invention includes a compound of the structure: or its pharmaceutically acceptable salt or isotopically labeled derivative, which may be optionally be in the form of a hydrate, solvate or polymorph, optionally in a pharmaceutically acceptable carrier or excipient.
  • Compound (1) may exist as a crystal polymorph, and the compound of the present invention may be in any of single crystal forms or a mixture of two or more crystal forms.
  • Compound (1) can be in an amorphous form, or can be an anhydride or a solvate, such as a hydrate.
  • the present invention includes isotopically labeled derivatives of Compound (1) and pharmaceutically acceptable salts thereof.
  • the isotopically labeled compound is equivalent to Compound (1) except that one or more of atom(s) are replaced by atom(s) having an atomic mass or a mass number different from those usually found in nature.
  • Examples of an isotope that can be incorporated into the compound of the present invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, fluorine, iodine, bromine and chlorine, such as 2 H, 3 H, 11 C, 13 C, 14 C, 18 F, 35 S, 123 I, and 125 I.
  • the isotopically labeled compound such as a compound into which a radioactive isotope of, for example, 3 H and/or 14 C is incorporated, is useful for a tissue distribution assay for a medicine and/or a matrix.
  • the isotopes 3 H and 14 C are regarded to be useful because these isotopes can be easily prepared and detected.
  • the isotopes 11 C and 18 F are useful in PET (positron emission tomography).
  • the isotope 125 I is regarded to be useful in SPECT (single photon emission computed tomography), and can be useful in brain imaging.
  • the isotopically labeled compound can be similarly prepared by using a readily available isotopically labeled reagent instead of a non-isotopically labeled reagent and by performing processes disclosed in schemes and/or examples described below.
  • Compound (1) can be used as a chemical probe for capturing a target protein of a biologically active low molecular weight compound.
  • the compound of the present invention can be transformed into an affinity chromatography probe, a photoaffinity probe or the like by introducing a labeling group, a linker or the like into a moiety other than a structural moiety indispensable to activity expression of the compound by a method described in J. Mass Spectrum. Soc. Jpn. Vol. 51, No. 5, 2003, p. 492-498 , WO2007/139149 , or the like.
  • Examples of the labeling group, the linker or the like used in such a chemical probe include groups belonging to the following groups (1) to (5).
  • Protein labeling groups such as photoaffinity labeling groups (such as a benzoyl group, a benzophenone group, an azide group, a carbonyl azide group, a diaziridine group, an enone group, a diazo group and a nitro group), and chemical affinity groups (such as a ketone group in which an alpha carbon atom is substituted by a halogen atom, a carbamoyl group, an ester group, an alkylthio group, a Michael acceptor of a, ⁇ -unsaturated ketone, ester, or the like, and an oxirane group); (2) cleavable linkers such as S-S, O-Si-O, a monosaccharide (such as a glucose group or a galactose group) and a disaccharide (such as lactose
  • a probe prepared by introducing, into the compound of the present invention, a labeling group or the like selected from the above-described groups (1) to (5) by the method described in any of the aforementioned literatures or the like can be used as a chemical probe for identifying a marker protein useful for research of a novel potential drug target.
  • salts used herein include salts with inorganic acids, salts with organic acids, and salts with acidic amino acids, and in particular, pharmaceutically acceptable salts are preferred.
  • a salt of the compound of the present invention embraces an anhydride of a pharmaceutically acceptable salt thereof and a solvate, such as a hydrate, of the pharmaceutically acceptable salt.
  • a salt with an inorganic acid include salts with hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid and the like
  • a salt with an organic acid include salts with acetic acid, succinic acid, famaric acid, maleic acid, tartaric acid, citric acid, lactic acid, stearic acid, benzoic acid, methanesulfonic acid, ethanesulfonic acid, benzenesulfonic acid, p-toluenesulfonic acid and the like.
  • Preferable examples of a salt with an acidic amino acid include salts with aspartic acid and glutamic acid and the like.
  • the salt and the hydrate can be converted to a free body of the Compound (1) by a conventional method.
  • the present invention provides pharmaceutical compositions comprising Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, and a pharmaceutically acceptable excipient.
  • the compound described herein, or pharmaceutically acceptable salt or isotopically labeled derivative thereof is provided in an effective amount in the pharmaceutical composition (e.g ., a therapeutically effective amount).
  • compositions described herein can be prepared by any method known in the art of pharmacology.
  • preparatory methods include bringing Compound (1) (i.e., the "active ingredient") into association with a carrier or excipient, and/or one or more other accessory ingredients, and then, if necessary and/or desirable, shaping, and/or packaging the product into a desired single- or multi-dose unit.
  • a pharmaceutical composition of the invention could be prepared according to the known method such as a method described in the general rules for preparations of the Japanese Pharmacopoeia, 16 th edition, the United States Pharmacopoeia, and the European Pharmacopoeia, 9 th edition.
  • a pharmaceutical composition of the invention could be administered to patients appropriately depending on the dosage form.
  • compositions can be prepared, packaged, and/or sold in bulk, as a single unit dose, and/or as a plurality of single unit doses.
  • a "unit dose” is a discrete amount of the pharmaceutical composition comprising a predetermined amount of the active ingredient.
  • the amount of the active ingredient is generally equal to the dosage of the active ingredient which would be administered to a subject and/or a convenient fraction of such a dosage, such as one-half or one-third of such a dosage.
  • Relative amounts of the active ingredient, the pharmaceutically acceptable excipient, and/or any additional ingredients in a pharmaceutical composition described herein will vary, depending upon the identity, size, and/or condition of the subject treated and further depending upon the route by which the composition is to be administered.
  • the composition may comprise between 0.1% and 100% (w/w) active ingredient.
  • compositions used in the manufacture of provided pharmaceutical compositions include inert diluents, dispersing and/or granulating agents, surface active agents and/or emulsifiers, disintegrating agents, binding agents, preservatives, buffering agents, lubricating agents, and/or oils. Excipients such as cocoa butter and suppository waxes, coloring agents, coating agents, sweetening, flavoring, and perfuming agents may also be present in the composition.
  • the compound provided herein are typically formulated in dosage unit form for ease of administration and uniformity of dosage. It will be understood, however, that the total daily usage of the compositions described herein will be decided by a physician within the scope of sound medical judgment.
  • the specific therapeutically effective dose level for any particular subject or organism will depend upon a variety of factors including the disease being treated and the severity of the disorder; the activity of the specific active ingredient employed; the specific composition employed; the age, body weight, general health, sex, and diet of the subject; the time of administration, route of administration, and rate of excretion of the specific active ingredient employed; the duration of the treatment; drugs used in combination or coincidental with the specific active ingredient employed; and like factors well known in the medical arts.
  • Compound (1) can be administered by any route, including enteral (e.g., oral), parenteral, intravenous, intramuscular, intra-arterial, intramedullary, intrathecal, subcutaneous, intraventricular, transdermal, interdermal, rectal, intravaginal, intraperitoneal, topical (as by powders, ointments, creams, and/or drops), mucosal, nasal, bucal, sublingual; by intratracheal instillation, bronchial instillation, and/or inhalation; and/or as an oral spray, nasal spray, and/or aerosol.
  • enteral e.g., oral
  • parenteral intravenous, intramuscular, intra-arterial, intramedullary
  • intrathecal subcutaneous, intraventricular, transdermal, interdermal, rectal, intravaginal, intraperitoneal
  • topical as by powders, ointments, creams, and/or drops
  • mucosal nasal, bucal, sublingual
  • Specifically contemplated routes are oral administration, intravenous administration (e.g ., systemic intravenous injection), regional administration via blood and/or lymph supply, and/or direct administration to an affected site.
  • intravenous administration e.g ., systemic intravenous injection
  • regional administration via blood and/or lymph supply e.g ., regional administration via blood and/or lymph supply
  • direct administration e.g ., direct administration to an affected site.
  • the most appropriate route of administration will depend upon a variety of factors including the nature of the agent (e.g., its stability in the environment of the gastrointestinal tract), and/or the condition of the subject ( e.g ., whether the subject is able to tolerate oral administration).
  • Compound (1) required to achieve an effective amount will vary from subject to subject, depending, for example, on species, age, and general condition of a subject, severity of the side effects or disorder, identity of the particular compound, mode of administration, and the like.
  • An effective amount may be included in a single dose (e.g., single oral dose) or multiple doses ( e.g ., multiple oral doses).
  • any two doses of the multiple doses include different or substantially the same amounts of a compound described herein.
  • the frequency of administering the multiple doses to the subject or applying the multiple doses to the tissue or cell may be, in non-limiting examples, three doses a day, two doses a day, one dose a day, one dose every other day, one dose every third day, one dose every week, one dose every two weeks, one dose every three weeks, or one dose every four weeks, or even slow dose controlled delivery over a selected period of time using a drug delivery device.
  • the frequency of administering the multiple doses to the subject or applying the multiple doses to the tissue or cell is one dose per day.
  • the frequency of administering the multiple doses to the subject or applying the multiple doses to the tissue or cell is two doses per day. In certain embodiments, the frequency of administering the multiple doses to the subject or applying the multiple doses to the tissue or cell is three doses per day. In certain embodiments, when multiple doses are administered to a subject or applied to a tissue or cell, the duration between the first dose and last dose of the multiple doses is about or at least one day, two days, four days, one week, two weeks, three weeks, one month, two months, three months, four months, six months, nine months, one year, two years, three years, four years, five years, seven years, ten years, fifteen years, twenty years, or the lifetime of the subject, tissue, or cell.
  • the duration between the first dose and last dose of the multiple doses is about or at least three months, six months, or one year. In certain embodiments, the duration between the first dose and last dose of the multiple doses is the lifetime of the subject, tissue, or cell.
  • a dose (e.g., a single dose, or any dose of multiple doses) described herein includes independently between 0.001 mg/kg and 0.01 mg/kg, between 0.01 mg/kg and 0.1 mg/kg, or between 0.1 mg/kg and 1 mg/kg, inclusive, of Compound (1). Examples are dosage forms with at least about 0.01, 0.05, 0.1, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 10, 5, 20, 25, or 50 mg of active compound, or its salt, in a dosage form.
  • Dose ranges as described herein provide guidance for the administration of provided pharmaceutical compositions to an adult.
  • the amount to be administered to, for example, a child or an adolescent can be determined by a medical practitioner or person skilled in the art and can be lower or the same as that administered to an adult.
  • kits e.g ., pharmaceutical packs.
  • the kits provided may comprise a pharmaceutical composition or Compound (1) and a container (e.g ., a vial, ampule, bottle, syringe, and/or dispenser package, or other suitable container).
  • a container e.g ., a vial, ampule, bottle, syringe, and/or dispenser package, or other suitable container.
  • provided kits may optionally further include a second container comprising a pharmaceutical excipient for dilution or suspension of a pharmaceutical composition or Compound (1).
  • the pharmaceutical composition or Compound (1) provided in the first container and the second container are combined to form one unit dosage form.
  • a kit described herein may include one or more additional pharmaceutical agents described herein as a separate composition.
  • Compound (1) has significant tumor vascular remodeling effects and anti-CAF activity, and therefore, it has potential use for the treatment of cancer and/or the inhibition of tumor growth.
  • a method of treating cancer in a subject comprising administering to the subject an effective amount of a Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof.
  • the present invention also provides Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof, for use in treating cancer in a subject.
  • the present invention also provides the use of Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof, for the manufacture of a medicament for the treating cancer.
  • Also provided herein is a method of inhibiting tumor growth in a subject comprising administering to the subject Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof.
  • the present invention also provides the use of Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof, for the manufacture of a medicament for inhibiting tumor growth.
  • the cancer is head and neck cancer, breast cancer, esophageal cancer, uterine cancer, ovarian cancer, colorectal cancer, endometrial cancer, gastric cancer, small bowel cancer, bladder cancer, or a sarcoma
  • the cancer is head and neck cancer (e.g., head and neck squamous cell carcinoma, oral cancer, throat cancer, salivary gland cancer, tongue cancer, adenoid cystic carcinoma).
  • the cancer is squamous cell carcinoma of the head and neck (SCCHN).
  • the cancer is adenoid cystic carcinoma.
  • the cancer is breast cancer (e.g ., HER2-positive breast cancer, triple negative breast cancer).
  • the cancer is HER2-positive breast cancer.
  • the cancer is triple negative breast cancer.
  • the cancer is colorectal cancer ( e.g., colon carcinoma).
  • the cancer is colon carcinoma.
  • the cancer is esophageal cancer (e.g ., esophageal adenocarcinoma).
  • the cancer is esophageal adenocarcinoma.
  • the cancer is uterine cancer ( e.g., uterine sarcoma).
  • the cancer is uterine sarcoma.
  • the cancer is ovarian cancer.
  • the cancer is a sarcoma (e.g., uterine sarcoma, fibrosarcoma, angiosarcoma, synovial sarcoma, soft tissue carcinoma).
  • the cancer is fibrosarcoma. In certain embodiments, the cancer is angiosarcoma. In certain embodiments, the cancer is synovial sarcoma. In certain embodiments, the cancer is soft tissue carcinoma. In certain embodiments, the cancer is gastric cancer. In certain embodiments, the cancer is bowel cancer ( e.g ., small bowel cancer, small bowel adenocarcinoma). In certain embodiments, the cancer is small bowel cancer. In certain embodiments, the cancer is small bowel adenocarcinoma. In certain embodiments, the cancer is bladder cancer ( e.g ., urothelial cancer). In certain embodiments, the cancer is urothelial cancer. In certain embodiments, the cancer is endometrial cancer. In certain embodiments, the cancer is a rare cancer.
  • Compound (1) can be administered in combination with other therapeutic agents or treatment modalities.
  • the additional therapeutic agent is an antibody.
  • the additional therapeutic agent is a monoclonal antibody.
  • the compound of the present invention can be administered in combination with another therapeutic agent, such as anti-EGFR therapy, anti-HER2 therapy, anti-PD-1 therapy, anti-PD-Ll therapy, or irradiation therapy.
  • Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof is administered in combination with an anti-EGFR therapy (e.g ., anti-EGFR monoclonal antibody (mAb), such as cetuximab).
  • an anti-EGFR therapy e.g ., anti-EGFR monoclonal antibody (mAb), such as cetuximab).
  • the anti-EGFR therapy is an anti-EGFR antibody.
  • SCCHN head and neck
  • a method of treating squamous cell carcinoma of the head and neck (SCCHN) in a subject comprising administering to said subject Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof, in combination with an anti-EGFR (epidermal growth factor receptor) mAb therapy.
  • the anti-EGFR mAb is cetuximab (CTX).
  • Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof is administered in combination with an anti-HER2 therapy (e. g., anti-HER2 monoclonal antibody (mAb) such as trastuzumab).
  • an anti-HER2 therapy e. g., anti-HER2 monoclonal antibody (mAb) such as trastuzumab.
  • the anti-HER2 therapy is an anti-HER2 antibody.
  • mAb monoclonal antibody
  • the anti-HER2 therapy is an anti-HER2 antibody.
  • HER2 human epidermal growth factor receptor
  • the anti-HER2 mAb is trastuzumab.
  • Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof is administered in combination with an anti-PD-1 or anti-PD-Ll therapy (e.g., anti-PD-1 or anti-PD-Ll monoclonal antibody).
  • an anti-PD-1 or anti-PD-Ll therapy e.g., anti-PD-1 or anti-PD-Ll monoclonal antibody.
  • the anti-PD-1 or anti-PD-Ll therapy is an antibody.
  • a method of treating colorectal cancer in a subject in need thereof comprising administering to said subject Compound (1), or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a composition thereof, in combination with an anti-PD-1 or anti-PD-Ll therapy (e.g., mAb therapy).
  • Compound (1) or a pharmaceutically acceptable salt or isotopically labeled derivative thereof, or a pharmaceutical composition thereof, is used in combination with radiation therapy (RT). In certain embodiments, the compound is administered in combination with surgery.
  • RT radiation therapy
  • the compound according to the present invention can be produced by the methods described in Examples below. However, these examples are only for illustrative purposes, and the compound according to the present invention is not limited to the specific examples mentioned below in any way.
  • the silica gel for purification by using silica gel column chromatography was Hi-Flash TM Column (Silica Gel, 30 ⁇ m 60 ⁇ or 40 ⁇ m 60 ⁇ , Yamazen Corporation), the silica gel for purification by using NH silica gel column chromatography was Chromatorex NH silica gel (Fuji Silysia Chemical LTD).
  • Analytical thin layer chromatography (TLC) was performed with TLC silica gel 60 F 254 , layer thickness 0.25mm (Merck KGaA) or Chromatorex TLC NH silica gel F 254 , layer thickness 0.25mm (Fuji Silysia Chemical LTD). TLC plates were visualized by staining with p-anisaldehyde stain, phosphomolybdic acid stain or Hanessian's Stain.
  • NMR spectra were recorded on a JEOL ECZ500R (500 MHz), JEOL ECZ400S (400 MHz), Varian Inova 500 (500 MHz), Varian Mercury 400 (400 MHz) or Bruker Avance (600 MHz) spectrometer. Chemical shifts are reported in parts per million (ppm).
  • 1 H NMR spectra CDCl3, C 6 D 6 , and/or CD 3 OD
  • the residual solvent peak was used as the internal reference (7.27 ppm in CDCl 3 ; 7.16 ppm in C 6 D 6 ; 3.31 ppm in CD 3 OD).
  • High performance liquid chromatography was carried out with Shimadzu LC-10AD on a UV spectrophotometric detector (200 nm, Shimadzu SPD-10A).
  • reaction mixture was stirred at -78 °C. After 90 min, the reaction was quenched with MeOH (4.37 mL) carefully at -78 °C, then removed the cooling bath. Saturated potassium sodium tartrate tetrahydrate solution (300 mL) was added to the reaction mixture, continued stirring for 2 hr at room temperature. The reaction mixture was poured into a separatory funnel, then the layers were separated. The aqueous layer was extracted with EtOAc (300 mL). The combined organic extracts were washed with brine (300 mL), dried over Na 2 SO 4 , filtered, concentrated under reduced pressure. The crude lactol was used for the next reaction without purification.
  • reaction mixture was stirred at 20 °C for 2 hr.
  • the reaction mixture was diluted with EtOAc and quenched with sat.NH 4 Cl aq, then the layers were separated.
  • the aqueous layer was extracted with EtOAc.
  • the combined organic extracts were washed with brine, dried over MgSO 4 , filtered and concentrated under reduced pressure.
  • reaction mixture was quenched with sat.Na 2 SO 3 aq and the layers were separated.
  • the aqueous layer was extracted with DCM.
  • the combined organic extracts were washed with brine.
  • the combined organic layers were dried over Na 2 SO 4 , filtered and concentrated under reduced pressure.
  • Imidazole hydrochloride (155 mg, 1.48 mmol) was dissolved in DMF (2.9 mL) to give a 0.5 M imidazole hydrochloride solution in DMF. 1.0 mL of this solution was mixed with 1.0 mL of TBAF (1.0 M, THF solution) to give a premixed solution of 0.5 M TBAF and 0.25 M imidazole hydrochloride in THF-DMF (1:1).
  • Natural Halichondrin compounds and modified compounds thereof are known in the literature (See, e.g., D. Uemura et al. "Norhalichondrin A: An Antitumor Polyether Macrolide from a Marine Sponge” J. Am. Chem. Soc., 107, 4796 (1985 ); Marc Litaudon et al. "Antitumor Polyether Macrolides: New and Hemisynthetic Halichondrins from the New Zealand Deep-Water Sponge Lissodendoryx sp.” J. Org. Chem., 1997, 62, 1868-1871 ). However, most of them are not easily available. For example, Dr. Uemura et.al.
  • Halichondrin B shows the strongest anti-tumor activities against B-16 melanoma cells in vitro and is highly active against L-1210 Leukemia in vivo (See, e.g., D.
  • Halichondrin A An Antitumor Polyether Macrolide from a Marine Sponge
  • Halichondrin C is also active in various in vivo models but unstable in aqueous solution in comparison with Halichondrin B.
  • Norhalichondrin B is much weaker than Halichondrin B not only in vitro but also in vivo See, e.g., D. Uemura et al. "Norhalichondrin A: An Antitumor Polyether Macrolide from a Marine Sponge” J. Am. Chem. Soc., 107, 4796 (1985 )).
  • the following pharmacological tests use Halichondrin B (Hali-B) as reference compounds as needed.
  • FaDu cells were maintained in an RPMI-1640 (Wako Pure Chemical Industries, Ltd., 187-02021) medium containing 10% fetal bovine serum (FBS: Nichirei, 12D168), and penicillin and streptomycin in a 5% CO 2 incubator (37 °C).
  • MDA-MB231 the growth inhibitory activity of test compounds in a human breast cancer cell line MDA-MB231 was measured.
  • MDA-MB231 cells were maintained in Dulbecco's Modified Eagle's medium (Wako Pure Chemical Industries, Ltd., 044-29765) medium containing 10% fetal bovine serum (FBS: Nichirei, 12D168), and penicillin and streptomycin in a 5% CO 2 incubator (37 °C).
  • HCC1954 the growth inhibitory activity of test compounds in a human breast cancer cell line HCC1954 was measured.
  • HCC1954 cells were maintained in an RPMI-1640 medium modified to contain 2 mM L-glutamine, 10 mM HEPES, 1 mM sodium pyruvate, 4500 mg/L glucose, and 1500 mg/L sodium bicarbonate (ATCC 30-2001) containing 10% fetal bovine serum (FBS: Nichirei, 12D168), and penicillin and streptomycin in a 5% CO 2 incubator (37 °C).
  • FBS fetal bovine serum
  • penicillin and streptomycin penicillin and streptomycin in a 5% CO 2 incubator (37 °C).
  • HCC1954 cell suspension adjusted to a concentration of 4 ⁇ 10 4 cells/mL with the culture medium was added, and the cells were incubated overnight in a 5% CO 2 incubator (37 °C).
  • 25 ⁇ L of Compound (1) or Halichondrin B in three-fold dilution series suspended in the culture medium was added to each well, and the resultant was incubated for 3 days in a 5% CO 2 incubator (37 °C).
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin and streptomycin, was adjusted to a concentration of 4.8 ⁇ 10 7 cells/mL with Hanks' Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 7 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • Tumor Regression % 1 ⁇ minimum RTV ⁇ 100
  • mice On the basis of the volumes of tumors obtained on the first day of administration, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups. Each test compound was dissolved in DMSO and a solution was stored at the freezer before use. Immediately before the administration, the stock solution was diluted in saline with 100 ⁇ M of hydroxypropyl- ⁇ -cyclodextrin. Each evaluation sample was intravenously administered at a maximum tolerable dose (MTD). Incidentally, the experiment was conducted on groups each consisting of 4 mice. Tumor regression (%) of each test compound was shown in Table 4. Table 4 Test compound Dose (mg/kg) Tumor Regression (%) Halichondrin B 0.05 0 Compound (1) 0.2 43
  • SCHN head and neck
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 5 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • Tumor Regression % 1 ⁇ minimum RTV ⁇ 100
  • mice On the basis of the volumes of tumors obtained on the first day of administration, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups. The experiment was conducted on groups each consisting of 6 mice. Test compound was dissolved in saline and intravenously administered at doses from 0.06 mg/kg to 0.18 mg/kg once a week for 2 weeks (Q7D ⁇ 2 schedule). Tumor regression (%) of each test dose is shown in Table 5. Table 5 Test compound Dose (mg/kg) Tumor Regression (%) Compound (1) 0.06 59 Compound (1) 0.18 90
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 5 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • Tumor Regression % 1 ⁇ minimum RTV ⁇ 100
  • mice On the basis of the volumes of tumors obtained on the first day of administration, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups. The experiment was conducted on groups each consisting of 6 mice. Test compound was dissolved in saline and intravenously administered at 0.18 mg/kg once a week for 2 weeks (Q7D ⁇ 2 schedule). Tumor regression (%) for Compound (1) is shown in Table 6. Table 6 Test compound Dose (mg/kg) Tumor Regression (%) Compound (1) 0.18 90
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin and streptomycin, was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with Hanks' Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 7 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • mice On the basis of the volumes of tumors obtained on the first day of administration, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups.
  • Each test compound was dissolved in DMSO and a solution was stored at the freezer before use. Immediately before the administration, the stock solution was diluted in saline with 100 ⁇ M of hydroxypropyl- ⁇ -cyclodextrin.
  • Each test compound and was intravenously administered at doses from 1/4 MTD to 1/2 MTD in combination with cetuximab (Erbitux, Merck Serono Co., Ltd.). Incidentally, the experiment was conducted on groups each consisting of 4 mice. Tumor regression on day 35 (%) of each test compound are shown in Table 7.
  • a human HER-2 positive breast cancer cell line KPL-4 which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin and streptomycin, was adjusted to a concentration of 1 ⁇ 10 8 cells/mL with Hank's Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 7 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • Tumor Regression % 1 ⁇ minimum RTV ⁇ 100
  • mice On the basis of the volumes of tumors obtained on the first day of administration, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups. The experiment was conducted on groups each consisting of 6 mice. Each test compound was dissolved in DMSO and a solution was stored at the freezer before use. Immediately before the administration, the stock solution was diluted in saline. The test compound was intravenously administered at 0.09 mg/kg or 0.18 mg/kg in combination with trastuzumab (Herceptin, Genentech, Inc.). Tumor regression for Compound (1) is shown in Table 8. Table 8 Test compound Dose (mg/kg) Trastuzumab (mg/kg) Tumor Regression (%) - - 10 0 Compound (1) 0.09 - 43 0.09 10 83 0.18 - 87 0.18 10 100
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin and streptomycin, was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with PBS to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 7 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • Sections were deparaffinized, conditioned and the antigens were retrieved with CC1 (Ventana Medical Systems). Slides were blocked with Blocker A and Blocker B (Endogenous biotin blocking kit, Roche Diagnostics). Rat anti-mouse IgG CD31 antibody (Dianova GmbH) was applied at 2 ⁇ g/mL. Sections were incubated with the antibody for 6 hr, followed by 32 minutes incubation with biotinylated anti-rat IgG antibody (Jackson ImmunoResearch Laboratories) at 2.2 ⁇ g/mL.
  • the detection was performed with Streptavidin-HRP D for 16 min, followed by incubation with DAB D and DAB H 2 O 2 D (DABMap kit, Ventana Medical Systems, Inc) for 8 min. Slides were counterstained with Hematoxylin II (Roche Diagnostics) for 16 min, followed by incubation with Bluing reagent for 4 min. Sections were dehydrated in graded ethanols, defatted in xylene replacement and covered with DPX (Merck KGaA).
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin and streptomycin, was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with PBS to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 5 to 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • a test compound in saline with 100 ⁇ M of hydroxypropyl- ⁇ -cyclodextrin was intravenously administered at 1/2 MTD and MTD.
  • the experiment was conducted on groups each consisting of 3 mice. Two days after administration, tumor samples were collected and fixed with IHC Zinc Fixative (BD Pharmingen) at 4 °C for 24 hr. Paraffin-embedded tissues were sectioned (3 ⁇ m), mounted on positively charged slides, and air-dried for 6 hr. Immunohistochemical staining of ⁇ -SMA was conducted using Ventana autostainer model Discover XT (Roche Diagnostics).
  • Sections were deparaffinized, conditioned and the antigens were retrieved with proprietary buffers, EZPrep and CC1 (Ventana Medical Systems).
  • Mouse anti- ⁇ -SMA monoclonal antibody conjugated with alkaline phosphatase (clone 1A4, Sigma) was applied at 5 ⁇ g/mL. Sections were incubated with the antibody for 6 hr. The detection was performed with RedMap kit (Ventana Medical Systems, Inc). Sections were dehydrated in graded ethanols, defatted in xylene replacement and covered with DPX (Merck KGaA). The serial tumor slices were deparaffinized and stained with Mayer's hematoxylin (Muto Pure Chemicals) for 1 min. Sections were dehydrated in graded ethanols, defatted in xylene replacement and covered with DPX (Merck KGaA).
  • Immunostained slides were scanned using Vectra 2 Automated Slide Imaging System (Perkin Elmer Inc.).
  • the area of the ⁇ -SMA-positive region in the whole tumor was quantified by counting the ⁇ -SMA-positive objects using inForm 2 software (PerkinElmer Inc.). Area of the tumor region was measured by assessing the hematoxylin-staining area using inForm 2 software (PerkinElmer Inc.).
  • the area of the ⁇ -SMA positive region was normalized by the area of the tumor region.
  • a suppression rate of the ⁇ -SMA positive area of the test compound-dosing group was calculated with the below formula, and shown in Table 10.
  • Luciferase-transduced HSC-2-Luc cells were established by retrovirus-mediated gene transfer.
  • the DNA fragment encoding firefly luciferase was obtained from pGL3-enhancer plasmid (GenBank#:U47297), and subcloned into the retroviral vector pCX4pur (GenBank#: AB086386).
  • helper-free recombinant retroviruses were produced by transfecting the above retroviral expression vector together with pGP and pE-Ampho plasmids (Takara Bio; Shiga, Japan), into 293T cells (ATCC; Manassas, USA).
  • HSC-2 cells were infected with the recombinant retroviruses, and were cultured for two weeks in the presence of puromycin (2 ⁇ g/mL). The infected cells were selected from a polyclonal proliferative population of the culture.
  • the human SCCHN cell line, HSC-2-Luc was inoculated into tongue of female nude mice (1 ⁇ 10 6 cells in 50 ⁇ L of PBS), 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj mice; Charles River, Inc.; Shizuoka, Japan). Seven days after transplantation, the tumor volume was analyzed using bioluminescence signal from HSC-2-Luc cells. For bioluminescence imaging, 0.1 mL of 15 mg/mL D-luciferin (Promega, Madison, WI) was injected intraperitoneally into nude mice under 1% to 2% inhaled isoflurane anesthesia.
  • D-luciferin Promega, Madison, WI
  • the bioluminescence signal was monitored using the IVIS SPECTRUM series (PerkinElmer, Waltham, MA), consisting of a highly sensitive, cooled chargecoupled device camera. Living Image software (PerkinElmer, Waltham, MA) was used to grid the imaging data and integrate the total bioluminescence signal in each region-of-interest (ROI). All bioluminescence images were acquired with a 1 second exposure. Data were analyzed using total photon flux emission (photons / second) in the ROIs.
  • mice On the basis of the total photon flux emission obtained on the first day of administration, the mice were grouped such that averages of the total photon flux emission were substantially equal among the groups.
  • Compound (1) or cisplatin was intravenously administered with or without cetuximab (Erbitux, Merck Serono Co., Ltd.) once a week for 3 weeks (Q7D ⁇ 3 schedule). Two experiments were conducted using the identical procedure and all data were collected from the experiments. Each group consisted of 16 mice.
  • Luciferase-transduced FaDu-Luc cells were established by retrovirus-mediated gene transfer.
  • the DNA fragment encoding firefly luciferase was obtained from pGL3-enhancer plasmid (GenBank#:U47297), and subcloned into the retroviral vector pCX4pur (GenBank#: AB086386).
  • helper-free recombinant retroviruses were produced by transfecting the above retroviral expression vector together with pGP and pE-Ampho plasmids (Takara Bio; Shiga, Japan), into 293T cells (ATCC; Manassas, USA).
  • FaDu cells were infected with the recombinant retroviruses, and were cultured for two weeks in the presence of puromycin (2 ⁇ g/mL). The infected cells were selected from a polyclonal proliferative population of the culture.
  • a luciferase-transduced human SCCHN cell line FaDu-Luc which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin and streptomycin, was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with Hank's Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right thigh of nude mice, 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.). Thirteen days after the cell inoculation, the tumor volume was analyzed using bioluminescence signal from FaDu-Luc cells.
  • bioluminescence imaging 0.1 mL of 15 mg/mL D-luciferin (Promega, Madison, WI) was injected intraperitoneally into nude mice under 1% to 2% inhaled isoflurane anesthesia.
  • the bioluminescence signal was monitored using the IVIS SPECTRUM series (PerkinElmer, Waltham, MA), consisting of a highly sensitive, cooled chargecoupled device camera.
  • Living Image software PerkinElmer, Waltham, MA was used to grid the imaging data and integrate the total bioluminescence signal in each region-of-interest (ROI). All bioluminescence images were acquired with a 1 second exposure. Data were analyzed using total photon flux emission (photons / second) in the ROIs.
  • Relative bioluminescence level Total photon flux emission day X / Total photon flux emission the first day
  • Tumor Regression % 1 ⁇ minimum Relative bioluminescence level ⁇ 100
  • mice On the basis of the total photon flux emission obtained on the first day of administration, the mice were grouped such that averages of the total photon flux emission were substantially equal among the groups.
  • the experiment was conducted on groups each consisting of 6 mice.
  • Compound (1) was administrated via tail vein injection on day 1 and 8. Irradiation was performed 18 Gy on day 4 and day 11. Tumor regression for Compound (1) is shown in Table 12.
  • Table 12 Test compound Dose (mg/kg) Radiation (Gy) Tumor Regression (%) - - 18 16 Compound (1) 0.09 - 0 0.09 18 97
  • a murine undifferentiated colon carcinoma cell line CT26 which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin and streptomycin, was adjusted to a concentration of 2 ⁇ 10 7 cells/mL with Hank's Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of BALB/c mice, 6 weeks of ages (BALB/cAnNCrlCrlj, female, Charles River Laboratories Japan, Inc.). Two days after the cell inoculation, the mice were randomly divided into four groups and each group consists of 8 mice.
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2
  • T / C mean tumor volume of treated group / mean tumor volume of control group
  • Inhibition of tumor growth % 1 ⁇ T / C ⁇ 100
  • test compound was intravenously administered at 0.09 mg/kg on days 3 and 11.
  • Anti-mPD-1 antibody (BE0146, Bio X Cell) was intravenously administered at 10 mg/kg on days 3, 7, 11, and 15. Inhibition of tumor growth on day 15 (%) of each test compound is shown in Table 13.
  • Tubulin Polymerization Assay kit was purchased from Cytoskeleton, Inc. (Cat.# BK011P). The kit contained 1 bottle of lyophilized tubulin protein purified from porcine brain, 3 tubes of lyophilized GTP, 2 bottles of lyophilized assay buffer, and 1 bottle of tubulin glycerol buffer. Assay buffer was prepared by dissolving the contents in 10 mL of deionized and sterilized water.
  • This solution contained 80 mmol/L piperazine- N , N '-bis[2-ethanesulfonic acid] sesquisodium salt, 2.0 mmol/L magnesium chloride, 0.5 mmol/L ethylene glycol-bis(2-amino-ethyl ether) N , N , N ', N '-tetra-acetic acid, pH 6.9, and 10 ⁇ mol/L fluorescent reporter.
  • the buffer was stored at -70 °C until use.
  • Tubulin glycerol buffer consisted of 80 mmol/L piperazine- N , N '-bis[2-ethanesulfonic acid] sesquisodium salt, 2.0 mmol/L magnesium chloride, 0.5 mmol/L ethylene glycol-bis(2-amino-ethyl ether) N , N , N ', N '-tetra-acetic acid, and 60% v/v glycerol, pH 6.9. It was stored at 4 °C until use. GTP stock solution was prepared by dissolving the contents of each tube in 100 ⁇ L of deionized and sterilized water to achieve a concentration of 100 mmol/L GTP.
  • Tubulin stock solution (10 mg/mL) was prepared by dissolving the tubulin powder adding 1.1 mL of the mixture of assay buffer and GTP stock solution (100:1, v/v). Aliquots were frozen in liquid nitrogen, and then stored at -70 °C until use.
  • reaction mixture was prepared by mixing 820 ⁇ L of assay buffer, 17.6 ⁇ L of GTP stock solution, and 600 ⁇ L of tubulin glycerol buffer. Reaction mixture (1015 ⁇ L) was combined with 240 ⁇ L of the tubulin stock solution. This solution was called as tubulin reaction mixture and used for the measurement of test and control wells. No tubulin reaction mixture was prepared by mixing 89.85 ⁇ L of reaction mixture and 21.25 ⁇ L of assay buffer for the measurement of blank wells.
  • the Compound (1) solution (6.25-100 ⁇ mol/L; final concentrations 0.625-10 ⁇ mol/L), or vehicle was added at 5 ⁇ L to individual wells of a 96-well half-area microtiter plate.
  • Tubulin reaction mixture or no tubulin reaction mixture was added at 45 ⁇ L to each well of the plate.
  • Fluorescence emission at 460 nm (excitation wavelength at 360 nm) was measured every 2 minutes for 90 minutes using the SpectraMax ® M5e microplate reader (Molecular Devices).
  • Tubulin polymerization was followed by fluorescence enhancement due to the incorporation of a fluorescence reporter into microtubules as polymerization occurred.
  • the assay was performed in duplicate.
  • Fluorescence intensity mean fluorescence measurement of test wells or control wells ⁇ mean fluorescence measurement of blank wells; blank well : with vehicle without tubulin ; control well : with vehicle and tubulin; test well: with compounds and tubulin .
  • a cell-based microtubule (MT) dynamics assay was conducted with the U2OS-EB3-AG osteosarcoma cell line, in which the fusion protein of EB3 (a microtubule plus end binding protein) and Azami-Green (EB3-AG) was stably expressed.
  • U2OS-EB3-AG cells were culture in RPMI-1640 medium containing 10% FBS, and penicillin-streptomycin, at 37 °C in a humidified 5% CO 2 atmosphere.
  • the MT dynamics in the live cells can be visualized as the movement of the comet-like structure of EB3- AG.
  • U2OS-EB3-AG cells plated on glass-base culture plates were treated with Compound (1) at the indicated concentration and the microtubule dynamics were monitored by time-lapse imaging using fluorescent microscope with 60-fold magnification oil- immersed objective lens (BZ-X710, KEYENCE, Japan). The still images at the indicated time points were presented in Figure 10B . Higher magnification views of the boxed areas were shown in inlets.
  • Compound (1) had the ability to suppress the MT dynamics.
  • the in vitro antiproliferative assays for Compound (1) were conducted using a small panel of cancer cell lines including human squamous cell carcinoma of the esophagus (OE21, TE-8), human adenocarcinoma of the esophagus (OE33), and human uterine sarcoma (MES-SA, MES-SA-Dx5-Rx1). All cell lines were cultured in RPMI-1640 medium containing 10% FBS, and penicillin-streptomycin (culture medium), in a 5% CO 2 incubator (37 °C).
  • Value of the wells containing cells without adding the test compounds was defined as 100% and the value of the wells containing no cells was defined as 0%.
  • the concentration of Compound (1) necessary for inhibiting the cell growth by 50% i.e., an IC 50 value
  • the P-gp susceptibility was calculated as the ratio of the IC 50 value in MES-SA-Dx5-Rx1 cells, which overexpress P-gp, to the IC 50 value in MES-SA cells.
  • a human HER-2 positive breast cancer cell line KPL-4 which had been cultured in a DMEM containing 10% FBS, and penicillin-streptomycin, was adjusted to a concentration of 1 ⁇ 10 8 cells/mL with Hanks' Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 8 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • RBW Body weight day X / Body weight the first day
  • mice On the basis of the volumes of tumors obtained on Day 1, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups.
  • the experiment was conducted on groups each consisting of six mice.
  • the test compound was dissolved in DMSO and a solution was stored in the freezer before use. Immediately before the administration, the stock solution was diluted with saline.
  • the test compound in saline was intravenously once-weekly administered at 20 ⁇ g/kg, 60 ⁇ g/kg, or 180 ⁇ g/kg for 2 weeks (on Day 1 and Day 8).
  • the tumor regression was observed in 60 ⁇ g/kg- and 180 ⁇ g/kg-treated groups, and the administration at 180 ⁇ g/kg completely eradicated the xenograft tumors in all mice on Day 15.
  • a human ovarian cancer cell line COLO-704 which had been cultured in a RPMI-1640 containing 10% FBS, and penicillin-streptomycin, was adjusted to a concentration of 1 ⁇ 10 8 cells/mL with Hanks' Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 5 weeks of ages (CAnN.Cg- Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • RBW Body weight day X / Body weight the first day
  • mice On the basis of the volumes of tumors obtained on Day 1, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups.
  • the experiment was conducted on groups each consisting of six mice.
  • the test compound was dissolved in DMSO and a solution was stored in the freezer before use. Immediately before the administration, the stock solution was diluted with saline.
  • the test compound in saline was intravenously once-weekly administered at 20 ⁇ g/kg, 60 ⁇ g/kg, or 180 ⁇ g/kg for 2 weeks (on Day 1 and Day 8).
  • the compound treatment induced tumor regression at 180 ⁇ g/kg and tumor growth delay at 60 ⁇ g/kg.
  • the administration at 180 ⁇ g/kg completely eradicated the xenograft tumors in all mice on Day 22.
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin-streptomycin (culture medium), was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with culture medium to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • CAnN.Cg-Foxnlnu/CrlCrlj female, Charles River Laboratories Japan, Inc.
  • mice Each test compound was dissolved in DMSO and a solution was stored in the freezer before use. Immediately before the administration, the stock solution was diluted with saline. The test compound in saline was intravenously administered at 20 ⁇ g/kg, 60 ⁇ g/kg, or 180 ⁇ g/kg. Five days after the single administration, tumor samples were collected and fixed with IHC Zinc Fixative (BD Pharmingen) at 4 °C for 24 hours. Paraffin-embedded tissues were sectioned (3 ⁇ m), mounted on positively charged slides, and air-dried.
  • IHC Zinc Fixative BD Pharmingen
  • the detection was performed with Streptavidin-HRP D for 16 minutes, followed by incubation with DAB D and DAB H 2 O 2 D (DABMap kit, Ventana Medical Systems, Inc.) for 8 minutes. Slides were counterstained with Hematoxylin II (Roche Diagnostics) for 16 min, followed by incubation with Bluing reagent for 4 minutes. Sections were dehydrated in graded ethanols, defatted in xylene replacement and covered with DPX ® (Merck KGaA). Immunostained slides were scanned using Vectra ® 2 Automated Slide Imaging System (Perkin Elmer Inc.).
  • the number of blood vessels in the whole tumor was quantified by counting the CD31 -positive objects using inform 2 software (PerkinElmer Inc.) Area of the tumor region was measured by assessing the hematoxylin-staining area using inform 2 software (PerkinElmer Inc.) The number of blood vessels was normalized by the area of the tumor region.
  • the single administration of test compound at doses of 20, 60, and 180 ⁇ g/kg increased the tumor blood vessel number.
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin-streptomycin (culture medium), was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with culture medium to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • CAnN.Cg-Foxnlnu/CrlCrlj female, Charles River Laboratories Japan, Inc.
  • mice Each test compound was dissolved in DMSO and a solution was stored in the freezer before use. Immediately before the administration, the stock solution was diluted with saline. The test compound in saline was intravenously administered at 20 ⁇ g/kg, 60 ⁇ g/kg, or 180 ⁇ g/kg. Two days or 5 days after the single administration, tumor samples were collected and fixed with IHC Zinc Fixative (BD Pharmingen) at 4 °C for 24 hours. Paraffin-embedded tissues were sectioned (3 ⁇ m), mounted on positively charged slides, and air-dried. Sections were deparaffinized, conditioned and the antigens were retrieved using microwave with 1 mM EDTA at pH 6.0.
  • IHC Zinc Fixative BD Pharmingen
  • Sections were blocked with 1% of BSA in TBS.
  • Mouse anti- ⁇ -SMA monoclonal antibody conjugated with alkaline phosphatase (clone 1A4, Sigma) was applied at 5 ⁇ g/mL. Sections were incubated with the antibody for 2.5 hr. The detection was performed with Fast red II substrate kit (Nichirei Bioscience Inc.). Sections were counterstained with Mayer's Hematoxylin (Muto Pure Chemicals) for 50 seconds. Sections were dehydrated in graded ethanols, defatted in xylene replacement and covered with DPX (Merck KGaA). Immunostained slides were scanned using Vectra 2 Automated Slide Imaging System (Perkin Elmer Inc.).
  • the area of ⁇ -SMA-positive region in the whole tumor was quantified by counting the ⁇ -SMA-positive objects using inform 2 software (PerkinElmer Inc.) Area of the tumor region was measured by assessing the hematoxylin-staining area using inform 2 software (PerkinElmer Inc.). The area of the ⁇ -SMA- positive region was normalized by the area of the tumor region.
  • the single administration of test compound significantly reduced the ⁇ -SMA positive area at doses of 60 and 180 ⁇ g/kg on Day 3 and at a dose of 180 ⁇ g/kg on Day 6.
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin-streptomycin (culture medium), was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with culture medium to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan, Inc.).
  • CAnN.Cg-Foxnlnu/CrlCrlj female, Charles River Laboratories Japan, Inc.
  • Sections were deparaffinized, conditioned and the antigens were retrieved using microwave with 1 mM EDTA at pH 6.0 for Tenascin-C. For EDA-fibronectin, the antigens retrieval procedure was not necessary. Sections were incubated with BLOXALL Blocking Solution (Vector Labs) for 10 min to block endogenous peroxidase, and with Mouse on Mouse Ig Blocking Reagent (Vector Labs) for 1 hour, and then with 2.5% normal horse serum for 30 minutes. For immunohistochemical staining of Tenascin-C, mouse anti-Tenascin-C monoclonal antibody (clone 4C8MS, IBL) was applied at 5 ⁇ g/mL.
  • Sections were incubated with the antibody overnight at 4 °C.
  • mouse anti- EDA- fibronectin monoclonal antibody (clone IST-9, Abcam) was applied at 1.5 ⁇ g/mL. Sections were incubated with the antibody for 1 hour at room temperature. The detection was performed with Mouse On Mouse ImmPRESS TM Peroxidase Polymer Kit (Vector Labs). Sections were counterstained with Mayer's Hematoxylin (Muto Pure Chemicals) for 50 sec. Sections were dehydrated in graded ethanols, defatted in xylene replacement and covered with DPX (Merck KGaA).
  • a human squamous cell carcinoma of the head and neck (SCCHN) cell line FaDu which had been cultured in an RPMI-1640 medium containing 10% FBS, and penicillin-streptomycin, was adjusted to a concentration of 5 ⁇ 10 7 cells/mL with Hanks' Balanced Salt Solution to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of athymic mice (CAnN.Cg-Foxnlnu/CrlCrlj, female, 7 weeks old, Charles River Japan Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • mice On the basis of TV, the mice were randomly grouped (Day 1). Each group was consisted in six mice. Compound (1) was dissolved in DMSO and a solution was stored in the freezer before use. Compound (1) (20, 60, or 180 ⁇ g/kg) and Cetuximab (CTX, Erbitux ® , Merck Serono Co., Ltd.) (10 mg/kg) was diluted with saline and intravenously injected on Day 1. Changes of RTV of each group were shown in Figure 16 . At doses of 180 ⁇ g/kg and 60 ⁇ g/kg, antitumor efficacies of Compound (1) with CTX were stronger than that of CTX monotherapy with tumor regression. The antitumor efficacy of Compound (1) at doses of 20 ⁇ g/kg in combination with CTX tended to be stronger than that of CTX monotherapy.
  • CTX Cetuximab
  • a human uterine sarcoma cell line MES-SA which had been cultured in an RPMI-1640 containing 10% FBS, and penicillin-streptomycin, was adjusted to a concentration of 2 ⁇ 10 8 cells/mL with Hanks' Balanced Salt Solution to prepare a cell suspension, and the suspension was mixed with Geltrex ® (Thermo Fisher Scientific Inc., #A1413202) in a ratio of 1:1 to prepare a cell suspension in a concentration of 1 ⁇ 10 8 cells/mL.
  • Geltrex ® Thermo Fisher Scientific Inc., #A1413202
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan Inc.).
  • mice On the basis of the volumes of tumors obtained on Day 1, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups.
  • the experiment was conducted on groups each consisting of 6 mice.
  • the test compound was dissolved in DMSO and a solution was stored in the freezer before use. Immediately before the administration, the stock solution was diluted with saline.
  • the test compound in saline was intravenously once-weekly administered at 180 ⁇ g/kg for 2 weeks (on Day 1 and Day 8). The antitumor activity was observed with tumor growth delay in the treated group.
  • a human fibrosarcoma cell line HT-1080 which had been cultured in an E-MEM containing 10% FBS, NEAA and antibiotics was adjusted to a concentration of 3 ⁇ 10 7 cells/mL with medium to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of athymic mice (CAnN.Cg-Foxnlnu/CrlCrlj, female, 6 weeks old, Charles River Japan Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • mice On the basis of TV, the mice were randomly grouped (Day 1). Each group was consisted in six mice. Compound (1) was dissolved in DMSO and a solution was stored in the freezer before use. Compound (1) (180 ⁇ g/kg) was diluted with saline and intravenously injected on Day 1 and Day 8. Changes of RTV of each group was shown in Figure 17 . The antitumor activity was observed with tumor regression in the treated group.
  • mice When the volume of tumors reached approximately 200 mm 3 , animals are matched by tumor volume into treatment or control groups and dosing initiated on Day 1. Each group was consisted with five mice. Compound (1) was dissolved in DMSO and a solution was stored in the freezer before use. Compound (1) (100 ⁇ g/kg) diluted in saline and intravenously injected on Day 1 and Day 8. Changes of RTV of each group were shown in Figure 17 . The antitumor activity was observed with tumor regression in the treated group.
  • a human endometrial cancer cell line HEC-108 which had been cultured in an E-MEM containing 15% FBS and antibiotics were adjusted to a concentration of 7.14 ⁇ 10 7 cells/mL with medium to prepare a cell suspension.
  • the cell suspension was inoculated in a volume of 150 ⁇ L into a subcutaneous part of a right flank of athymic mice (CAnN.Cg-Foxnlnu/CrlCrlj, female, 6 weeks old, Charles River Japan Inc.).
  • Tumor volume mm 3 Longest diameter mm ⁇ Shortest diameter mm ⁇ Shortest diameter mm / 2 Relative tumor volume
  • RTV Tumor volume day X / Tumor volume the first day
  • mice On the basis of TV, the mice were randomly grouped (Day 1). Each group was consisted in six mice. Compound (1) was dissolved in DMSO and a solution was stored in the freezer before use. Compound (1) (180 ⁇ g/kg) was diluted in saline and intravenously injected on Day 1 and Day 8. Changes of RTV of each group was shown in Figure 18 . The antitumor activity was observed with tumor growth delay in the treated group.
  • a human endometrial cancer cell line AN3CA which had been cultured in an E-MEM containing 10% FBS, and penicillin-streptomycin, was adjusted to a concentration of 1.4 ⁇ 10 8 cells/mL with Hanks' Balanced Salt Solution to prepare a cell suspension, and the suspension was mixed with Geltrex ® (Thermo Fisher Scientific Inc., #A1413202) in a ratio of 1:1 to prepare a cell suspension in a concentration of 7 ⁇ 10 7 cells/mL.
  • Geltrex ® Thermo Fisher Scientific Inc., #A1413202
  • the cell suspension was inoculated in a volume of 100 ⁇ L into a subcutaneous part of a right flank of nude mice, 6 weeks of ages (CAnN.Cg-Foxnlnu/CrlCrlj, female, Charles River Laboratories Japan Inc.).
  • mice On the basis of the volumes of tumors obtained on Day 1, the mice were grouped such that averages of the tumor volumes were substantially equal among the groups.
  • the experiment was conducted on groups each consisting of five mice.
  • the test compound was dissolved in DMSO and a solution was stored in the freezer before use. Immediately before the administration, the stock solution was diluted with saline.
  • the test compound in saline was intravenously once-weekly administered at 180 ⁇ g/kg for 2 weeks (on Day 1 and Day 8). The antitumor activity was observed with tumor regression in the treated group.
  • NCI-N87 and MKN-28 were maintained in RPMI-1640 medium containing 10% FBS, penicillin and streptomycin in a 5% CO 2 incubator (37 °C).
  • RPMI-1640 medium containing 10% FBS, penicillin and streptomycin in a 5% CO 2 incubator (37 °C).
  • 100 ⁇ L of NCI-N87 or MKN-28 cell suspension adjusted to a concentration of 3 ⁇ 10 4 cells/mL with the culture medium was added, and the cells were incubated overnight in a 5% CO 2 incubator (37 °C).
  • HuTu 80 the growth inhibitory activities of test compounds in the human small bowel cancer cell line HuTu 80, which was isolated from duodenal tissue were measured.
  • HuTu 80 cells were maintained in EMEM medium containing 10% FBS, penicillin and streptomycin in a 5% CO 2 incubator (37 °C).
  • EMEM medium containing 10% FBS, penicillin and streptomycin
  • 5% CO 2 incubator 37 °C
  • 100 ⁇ L of a HuTu80 cell suspension adjusted to a concentration of 3 ⁇ 10 4 cells/mL with the culture medium was added, and the cells were incubated overnight in a 5% CO 2 incubator (37 °C).
  • SW780 cells were maintained in RPMI-1640 medium containing 10% FBS, penicillin, and streptomycin in a 5% CO 2 incubator (37 °C).
  • RPMI-1640 medium containing 10% FBS, penicillin, and streptomycin
  • a 96-well plate (Becton, Dickinson and Company, 353219)
  • 100 ⁇ L of a SW780 cell suspension adjusted to a concentration of 3 ⁇ 10 4 cells/mL with the culture medium was added, and the cells were incubated overnight in a 5% CO 2 incubator (37 °C).
  • the growth inhibitory activities of test compounds in the human synovial sarcoma cell line HS-SY-II were measured.
  • SH-SY-II cells were maintained in a DMEM medium containing 10% FBS, penicillin, and streptomycin in a 5% CO 2 incubator (37 °C).
  • a HS-SY-11 cell suspension adjusted to a concentration of 3 ⁇ 10 4 cells/mL with the culture medium was added, and the cells were incubated overnight in a 5% CO 2 incubator (37 °C).
  • the invention encompasses all variations, combinations, and permutations in which one or more limitations, elements, clauses, and descriptive terms from one or more of the listed claims is introduced into another claim.
  • any claim that is dependent on another claim can be modified to include one or more limitations found in any other claim that is dependent on the same base claim.
  • elements are presented as lists, e.g., in Markush group format, each subgroup of the elements is also disclosed, and any element(s) can be removed from the group. It should it be understood that, in general, where the invention, or aspects of the invention, is/are referred to as comprising particular elements and/or features, certain embodiments of the invention or aspects of the invention consist, or consist essentially of, such elements and/or features.
  • a pharmaceutical composition comprising the compound of numbered embodiment 1, or pharmaceutically acceptable salt thereof, in a pharmaceutically acceptable carrier.
  • the compound or pharmaceutically acceptable salt thereof according to numbered embodiment 1 for use in the treatment of a tumor or cancer characterized by angiogenesis, invasion, or metastasis.
  • the compound for use of numbered embodiment 6, wherein the cancer or tumor is squamous cell carcinoma of the head and neck (SCCHN).
  • the compound for use of numbered embodiment 18, wherein the cancer or tumor is uterine sarcoma, fibrosarcoma, synovial sarcoma, soft tissue sarcoma, or angiosarcoma.
  • PD-1 Programmed Death 1 protein
  • PD-L1 Programmed Death L1 protein
  • the compound for use of any one of numbered embodiments 4-24, for use in combination with an anti-EGFR (epidermal growth factor receptor) antibody for use in combination with an anti-EGFR (epidermal growth factor receptor) antibody.
  • the compound for use of numbered embodiment 29, wherein the cancer or tumor is squamous cell carcinoma of the head and neck (SCCHN).
  • the compound for use of any one of numbered embodiments 4-24, for use in combination with an HER2 (human epidermal growth factor receptor) antibody for use in combination with an HER2 (human epidermal growth factor receptor) antibody.
  • a method for treating a tumor or cancer characterized by angiogenesis, invasion or metastasis in a subject comprising administering to the subject the compound of numbered embodiment 1, or a pharmaceutically acceptable salt thereof, optionally in a pharmaceutically acceptable carrier.
  • the cancer or tumor is head and neck cancer, breast cancer, esophageal cancer, uterine cancer, ovarian cancer, colorectal cancer, endometrial cancer, gastric cancer, small bowel cancer, bladder cancer, or a sarcoma.
  • cancer or tumor is uterine sarcoma, fibrosarcoma, synovial sarcoma, soft tissue sarcoma, or angiosarcoma.
  • HER2 human epidermal growth factor receptor
  • a method for treating HER2-negative breast cancer or squamous cell carcinoma of the head and neck (SCCHN) in a subject comprising administering to the subject the compound of numbered embodiment 1, or a pharmaceutically acceptable salt thereof.
  • a compound or pharmaceutically acceptable salt thereof according to numbered embodiment 1 for the manufacture of a medicament for inhibiting growth of a tumor or cancer characterized by angiogenesis, invasion, or metastasis.

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EP4119563A3 (de) 2023-04-05
EP3606928A1 (de) 2020-02-12
AU2022291454B2 (en) 2024-03-28
JP6366873B1 (ja) 2018-08-08

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